Keeping time on the moon...

You’re out for a drive, 250,000 miles from Earth. Your flight leaves in 64 minutes. How did the crew of Apollo 17 make it?

On the final day, before setting off for home, there was just time for one last drive. Cernan jumped into the Rover and sped off through the boulder field, parking it a mile away from the module so its video camera could record their lunar take-off. In one-sixth gravity he bounced back to the module in playful slow-mo, climbed the steps and struggled out of his hefty Moonwear. After a final glance at his watch, and as Mission Control began another countdown, Cernan took the controls and turned to his co-pilot.